Witnessed a small object that actually stopped moving alltogether twice and lasted about 15 minutes before it disappeared out of site.

It is a beautiful sunny day with no clouds in the sky. I was on my lunch break from a class talking to my wife on the phone in my car when I spotted out of the corner of my eye what at first I thought was a skydiver as it looked to have a falling motion. I worked at an airport where they have skydiving and have witnessed jumps from the ground view several times. This was a little different as it looked way to high and was moving to slow. At first I was thinking maybe it was a military drop of some kind. I was on the phone so I did not give it to much thought but then it stopped moving all together. I asked my wife to go outside and see if she could see the object as well but she was several miles away and I could not point it out to her in the sky. As I was trying to tell her which way is North it started to move again. This time instead of the falling movement it began to climb and move to the East. At this point I asked my wife to go inside and do a google search for someone to call about something like this which she did and is how I was able to call you immediately after the sighting. As she was giving me your number the object once again stopped. After about a minute in which I was trying to tell my wife once again where it was with no avail it began to move again. This time it moved to the North West and at a very fast speed. It quickly disappeared out of sight. I got off the phone with my wife to call you but noticed two of my class mates looking up in the same direction. They where returning from lunch and saw me looking up in the sky. They spotted the object as well and witnessed it from the first time it stopped to when it disappeared. They both have agreed to give their names if needed. My phonecall with my wife lasted 20m 43s so the entire sighting lasted for a good 12 to 15 minutes. Like I said I worked at an airport and witnessed planes, helicopters, weather balloons and skydivers and this was definitely not any of those things. I am not sure what it was. I am not saying i! t was fr om outer space or aliens or anything like that. All I know is that it was very high and actually stopped moving all together and changed directions like nothing I have ever seen before.